package com.leyou.upload.service;



import com.github.tobato.fastdfs.domain.StorePath;

import com.github.tobato.fastdfs.service.FastFileStorageClient;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;

import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;

import java.util.Arrays;
import java.util.List;

@Service
public class UploadService {

     static final Logger logger = LoggerFactory.getLogger(UploadService.class);

    //支持的文件类型
     static final List<String> suffixes = Arrays.asList("image/png","image/jpeg");

    @Autowired
    FastFileStorageClient storageClient;


    public String uplpad(MultipartFile file) {
        try {

            //1.图片信息校验
            //1）校验文件类型
            String type = file.getContentType();
            if (!suffixes.contains(type)){
                logger.info("上传失败，文件类型不匹配:{}",type);
                return null;
            }
            //2)校验图片内容
            BufferedImage image = ImageIO.read(file.getInputStream());

            if (image == null){
                logger.info("上传失败,文件内容不符合要求");
                return null;
            }

            // 2.将图片上传到FastDFS
            //2.1获取文件后缀名
            String extension = StringUtils.substringAfterLast(file.getOriginalFilename(), ".");
            // 2.2、上传
            StorePath storePath = this.storageClient.uploadFile(
                    file.getInputStream(), file.getSize(), extension, null);

            //2.3返回完整路径

            return "http://image.leyou.com/"+storePath.getFullPath();
        }catch (Exception e){
            return null;
        }
    }
}
